What is the purpose of a “drain valve”?

The primary purpose of a drain valve is to facilitate the expulsion of water from a sprinkler system, particularly for maintenance or inspection activities. When the system requires servicing, it is essential to safely remove the water contained within to prevent leaks or water damage during work. This allows technicians to perform necessary maintenance tasks, such as inspecting the pipes, valves, and sprinkler heads, without the risk of water flow impeding their work or causing safety hazards.

The capability to drain water effectively is crucial in managing the overall integrity of the system and ensuring it operates efficiently. While regulating water pressure, enhancing distribution, or connecting to external water sources are also important aspects of a sprinkler system, they do not pertain specifically to the function of a drain valve.